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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone 4 / iPhone 4S

iPhone 4 / iPhone 4S iPhone 4 / 4S

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Old 01-28-2012, 06:45   #1 (permalink)
Join Date: Dec 2011
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Arrow Iphone 3gs 4.1 BB 06.15 unlock done

Unlock 6.15 Baseband - Manually Patch

Info about tutorial:
iPhone 3GS 16GB , iPhone 4
AT&T Lock Version 5.0.1 (CFW using Sn0wbreeze to preserve baseband).

Unlock 6.15 Baseband Files Needed:
Install iFile : Open Cydia>Manage>Sources>Edit>Add and add iFunbox

CommCenterClassic For 3GS :

iPhone 3gs 5.0.1fix.rar

To Unlock 6.15 Baseband Follow Steps:

Step 1. Connect your iPhone to PC

Step 2. Open iFunbox Go to :

-> Raw File System / System / Library / Frameworks / CoreTelephony.framework / Support /

-> Delete or Back-up CommCenterClassic

-> COPY the new one

-> Close iFunbox SCREENSHOOT:


Step 3. Open iFile

Go to : ->System / Library / Frameworks / CoreTelephony.framework / Support/commcentreclassic

->Click the Blue arrow next to the file name.


->Go to Access Permissions
->SET the Following:

User : Read, Write, Execute
Group : Read, Execute
World : Read, Execute

->Tap Done


Step 4. Install Ultrasn0w from Cydia and reboot your device.

Note: iOS 5.0.1 firmware is still tethered on new bottrom and iPhone 4

Finally We Have Unlocked 06.15 baseband


I Only tried and Test it on iPhone 3GS Baseband 06.15

For iPhone 4 Users Follow The Same Steps.

CommCenterClassic for Unlock 6.15 Baseband on iPhone 4 :

iPhone 4 5.0.1 fix.rar

We hope you would be satisfied with this 06.15 baseband unlock tutorial ?
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